256762807751 has 8 divisors (see below), whose sum is σ = 268922423520. Its totient is φ = 244686193312.

The previous prime is 256762807739. The next prime is 256762807757. The reversal of 256762807751 is 157708267652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256762807751 - 2¹⁴ = 256762791367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256762807757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20744000 + ... + 20756373.

It is an arithmetic number, because the mean of its divisors is an integer number (33615302940).

Almost surely, 2^256762807751 is an apocalyptic number.

256762807751 is a deficient number, since it is larger than the sum of its proper divisors (12159615769).

256762807751 is a wasteful number, since it uses less digits than its factorization.

256762807751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41500665.

The product of its (nonzero) digits is 9878400, while the sum is 56.

The spelling of 256762807751 in words is "two hundred fifty-six billion, seven hundred sixty-two million, eight hundred seven thousand, seven hundred fifty-one".